soem good quality spray paint like krylon...don't use the cheap stuff and make sure you whipe it down with accetone or paint thiner before painting and use some primer
yeah you need to wipe it off to get any oil/fingerprints off and make sure its clean might even light sand it then use some primer to make a good bond with the new paint and then spray away
and as always take some before and after pics to post for us to see